Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 0-by-0.

if ~isempty(instrfind)
fclose(instrfind);
delete(instrfind);
end

A = zeros(64,1);
B = zeros(64,1);
C = zeros(64,1);
D = zeros(64,1);
Arduino=serial('COM3','BaudRate',9600);
fopen(Arduino);
writedata=uint16(500); %0x01F4
fwrite(Arduino,writedata,'uint16') %write datac
for i=1:64 %read 64 lines of data
A(i,:) = fscanf(Arduino,'%f');
end

Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 0-by-0.

Error in testing (line 15)

A(i,:) = fscanf(Arduino,'%f');

Answer 1

[KSSV]

Try:

count = 0 ; 
A = zeros([],1) ; 
for i=1:64 %read 64 lines of data
    temp = fscanf(Arduino,'%f') ; 
    if ~isempty(temp)
        count = count+1 ; 
        A(count,:) = temp ;
    end
end

[Muhammad Hazrul]

No errors but nothing appeared it just moved to a next line. Do you know how to show the data from there ?

[KSSV]

Is data not stored in A?

[Muhammad Hazrul]

ohh yeah ur right. Thanks alot.